Site work and paving for a civil project in Issaquah, Washington. Completed plans call for site work for a bridge / tunnel; road / highway; for paving for a road / highway; water / sewer project; and bridge / tunnel.

SR 520, Mercer St to SR 520/Portage Bay, I-5 Interchange Improvements County: King For additional information on this project, please direct your inquiries to the Project Engineer: Name: Patrick Fuller, P.E. Phone: (206)805-2960 Email: SR520-I5-interchange@WSDOT.WA.GOV (CL 1 & 4 or 6, Over $60,000,000) CONTAINS VOLUNTARY MSVWBE GOAL: 26%. A State project on SR 520, MP 0.00 to MP 0.41 and I-5, MP 167.12 to MP 168.37. CONTAINS APPRENTICE UTILIZATION REQ: 15%. Requires: Rebuilding portions of the SR 520/I-5 interchange including the five existing ramps, add a new reversible HOV Direct Access ramp (including a new steel girder bridge) between SR 520 and the I-5 Express Lanes, widen and add an auxiliary lane on the I-5 Express Lanes between Mercer St and SR 520, and reconfigure the existing southbound I-5 Express Lane off-ramp to westbound Mercer St to be reversible. The project also includes removing concrete walls, constructing 23 retaining walls, earthwork, HMA & cement concrete paving, barriers, drainage, illumination, ITS, vehicle arrest barrier, sign bridges, signing, pavement marking, landscaping, temporary erosion & pollution control, minor utilities, traffic control and other work. 575 Working days. Involves 286 items. 27260 CY roadway excav incl haul, 14045 CY embankment compact, 1710 CY ditch excav incl haul, 1658 FL cement conc gutter, 4392 LF underdrain pipe, 110 EA catch basin, 4149 LF sch A storm sewer pipe, 28 EA sewer cleanout, 1976 LF ductile iron pipe, 13944 CY struct excav CL A incl haul, 5857 LF construct shaft, 6905 LF shaft, 6447 LF furnish solider pile, 141480 LB st rebar, 97 EA QA shaft test, 905 CY conc CL 4000, 9658 SF lagging, 980 SF traffic barrier, 2244 LF sew traffic barrier, 27379 SF conc fascia panel, 68 EA epoxy coat soil nail, 106 EA perm ground anchor, 36560 SF struct earth wall, 890 LF retaining wall traffic barrier with HMA pavmt, 234 LF retaining wall traffic barrier with PCCP, 54 EA vertical element, 6510 SF cast-in-place conc facing for LDCC walls, 15742 T CSBC, 796 CY cement conc pvmt, 17800 T HMA CL 3/8 IN PG 58H-22, 9200 LF longitudinal jnt seal, 3 ACRE seed, fert, mulch, 94 EA cornus sericea, 112 EA gaultheria shallon, 112 EA polystichum munitum, 98 EA prunus laurocerasus, 98 EA rosa rugosa, 2 ACRE soil amend, 2713 LF extruded curb, 2419 LF beam guardrail, 21 EA beam guardrail transition section, 1354 LF struct st barrier moment slab, 400 LF precast conc barrier, 10127 LF single slope conc barrier, 454 LF retaining barrier, 10910 LF temp barrier, 88350 LF profiled plastic line, 9370 LF profiled plastic wide lane line, 124250 LF temp pvmt marking-long duration, 1660 LF directional boring, 6080 CY struct excav CL B incl haul, 44440 SF shoring or extra excav CL B, 4100 SF conc cap, 654 SY conc slope protect, 60338 LB welded wire for cellular conc retaining wall, 6408 CY cellular conc, 1237 LF cable fence, 61 EA connect to drain struct, 1220 SY const geotextile, 18262 CY gravel borrow incl haul, 7547 SF shotcrete facing, 12520 SF wire mesh slope protect, 20 MO noise monitor, 600 HR contractor provided uniformed police officer. INCLUDES MINIMUM REQUIRED BIDS: SCHEDULE UPDATE: $1,500 EA, TYPE C PROGRESS SCH: $100,000. Lump Sum Bids for: Remove & dispose asbestos mat, COS temp sanitary sewer bypass, shoring or extra excav CL A, bridge deck riez reverse ramp bridge, perm ground anchor verify test, bridge drain mod, precast conc curtain wall, pier 3 column & wall retrofit, erosion control & water pollution prevent, perm signing, sign bridge 2 & 7, cantilever sign struct 5 & 6, bridge mounted sign bracket 1-5, temp illum sys, illum sys, traffic data accum & ramp meter sys, CCTV sys, comm conduit sys, comm cables & interface, video, voice & data dist & tran sys, ATM sign sys, changeable message sign sys, reversible controller sys, vehicle arresting barrier, temp traffic control, struct survey, rdwy survey, conc stair mercer & I-5, clean exist drain struct, ETicket sys, project office facilities, health & safety plan, community const mgmt. plan, treatment of contaminated soil & water, Geotech monitoring, SPCC plan. The Engineer will inform Planholders of the access information and protocol for the Zoom meeting. The meeting and virtual site visit are expected to last two hours. Questions will be addressed as described in Section 1-02.4. Meeting minutes will be distributed to all Planholders via addendum. All Planholders are encouraged to attend. WSDOT -SR 520, Mercer St to SR 520/Portage Bay, I-5 Interchange Improvements *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document.